| 表7.0.1-1 PN2.5 钢制管法兰用材料最大允许工作压力（表压） | (bar) | ||||||||||||||||||||
| 法兰材料 | 工作温度（℃） | ||||||||||||||||||||
| 类别号 | 20 | 50 | 100 | 150 | 200 | 250 | 300 | 350 | 375 | 400 | 425 | 450 | 475 | 500 | 510 | 520 | 530 | 540 | 550 | 575 | 600 |
| 1C1 | 2.5 | 2.5 | 2.5 | 2.4 | 2.3 | 2.2 | 2.0 | 2.0 | 1.9 | 1.6 | 1.4 | 0.9 | 0.6 | 0.4 | — | — | — | — | — | — | — |
| 1C2 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.3 | 2.2 | 2.1 | 1.6 | 1.4 | 0.9 | 0.6 | 0.4 | — | — | — | — | — | — | — |
| 1C3 | 2.5 | 2.5 | 2.4 | 2.3 | 2.3 | 2.1 | 2.0 | 1.9 | 1.8 | 1.5 | 1.3 | 0.9 | 0.6 | 0.4 | — | — | — | — | — | — | — |
| 1C4 | 2.3 | 2.2 | 2.0 | 2.0 | 1.9 | 1.8 | 1.7 | 1.6 | 1.6 | 1.4 | 1.2 | 0.9 | 0.6 | 0.4 | — | — | — | — | — | — | — |
| 1C9 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.4 | 2.3 | 2.3 | 2.2 | 2.2 | 2.1 | 1.7 | 1.2 | 1.0 | 0.9 | 0.8 | 0.7 | 0.6 | 0.4 | 0.2 |
| 1C10 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.4 | 2.4 | 2.3 | 1.8 | 1.4 | 1.2 | 1.1 | 0.9 | 0.8 | 0.7 | 0.5 | 0.3 |
| 1C13 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.4 | 2.4 | 2.3 | 2.2 | 1.5 | 1.0 | 0.9 | 0.8 | 0.7 | 0.6 | 0.5 | 0.4 | 0.3 |
| 1C14 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.1 | 1.4 | 1.2 | 1.1 | 0.9 | 0.8 | 0.7 | 0.5 | 0.3 |
| 2C1 | 2.3 | 2.2 | 1.8 | 1.7 | 1.6 | 1.5 | 1.4 | 1.3 | 1.3 | 1.3 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.1 | 1.1 | 1.0 | 0.8 |
| 2C2 | 2.3 | 2.2 | 1.9 | 1.7 | 1.6 | 1.5 | 1.4 | 1.4 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1.2 | 1.2 | 0.9 |
| 2C3 | 1.9 | 1.8 | 1.6 | 1.4 | 1.3 | 1.2 | 1.1 | 1.1 | 1.0 | 1.0 | 1.0 | 1.0 | — | — | — | — | — | — | — | — | — |
| 2C4 | 2.3 | 2.2 | 2.0 | 1.9 | 1.7 | 1.6 | 1.5 | 1.5 | 1.4 | 1.4 | 1.4 | 1.4 | 1.4 | 1.4 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1.2 | 0.9 |
| 2C5 | 2.3 | 2.2 | 2.0 | 1.9 | 1.8 | 1.7 | 1.6 | 1.6 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.4 | 1.2 | 0.9 |
| 12EO | 2.2 | 2.1 | 2.0 | 1.8 | 1.7 | 1.6 | 1.5 | 1.4 | — | 1.4 | — | 1.4 | — | 1.3 | — | — | — | — | 1.3 | — | 1.0 |